Halliburton Energy Services, Inc.

Ralph Joseph Robert

Louis Francis Lafleur

Clint Adam Brown

Paul Gregory James

Paul Anthony Haines

Apparatuses and methods for pressure regulating check valve assemblies are described. In an example, the check valve assembly comprises a housing defining a fluid passage having a fluid inlet side and a fluid outlet side. A lift check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid inlet side and a second check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid outlet side. A flow dampener is positioned within the fluid passage and between the first and second check valves.

Pressure regulating check valve

Apparatuses and methods for pressure regulating check valve assemblies are described. In an example, the check valve assembly comprises a housing defining a fluid passage having a fluid inlet side and a fluid outlet side. A first check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid inlet side and a second check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid outlet side. A flow dampener is positioned within the fluid passage and between the first and second check valves.

A pressure test system for use in downhole fluid injection includes a shear plug assembly disposed along a flow path defined in a sump housing. The sump housing also includes a sump cavity positioned downstream of the shear plug assembly. A shear element of the shear plug assembly secures the shear plug assembly in a first position within the flow path, so that the shear plug assembly blocks fluid flow through the sump housing. Following a pressure test, fluid pressure on the shear plug assembly may be increased until the shear element of the shear plug assembly shears, after which, the pressurized fluid drives the shear plug assembly into the sump cavity, permitting flow to bypass the sump cavity through bypass channels. The bypass channels and other flow paths may be arranged to function as a pressure wave muffler in order to protect pressure sensitive components after shear out.

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Spring, TX, United States of America

Ralph Joseph Robert